6 Set up with the display and adjustment module
6.5 Parameter adjustment - Extended adjustment
For technically demanding measuring points, you can carry out extended settings in " Extended adjustment".
Selection language
45037-EN-210726 The main menu is divided into five sections with the following func-tions:
Setup: Settings, for example, to measurement loop name, applica-tion, units, position correcapplica-tion, adjustment, AI FB 1 Channel - scaling - damping
Display: Settings, e.g., for language, measured value display, lighting Diagnosis: Information, e.g. on instrument status, pointer, measure-ment reliability, AI FB 1 simulation
Additional adjustments: PIN, date/time, reset, copy function Info: Instrument name, hardware and software version, date of manu-facture, sensor features
To ensure optimum adjustment of the measurement, the individual submenu items in the main menu " Setup" should be selected one after the other and provided with the correct parameters. The menu items are described in the following.
6.5.1 Setup
An address must be assigned to each Profibus PA instrument. Each address may only be assigned once in the Profibus PA network. The sensor is only recognized by the control system if the address is set correctly.
When the instrument is shipped, address 126 is set. This address can be used to test the function of the instrument and to connect it to a Profibus PA network. Then the address must be changed to integrate additional instruments.
The address setting is carried out either via:
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The address selection switch in the electronics compartment of the instrument (address setting via hardware)•
The display and adjustment module (address setting via software)•
PACTware/DTM (address setting via software)Hardware addressing is effective if an address less than 126 is set with the address selection switches on the electronics module of VEGABAR 83. In such case, software addressing has no effect - only the set hardware address applies.
Software addressing is only effective if address 126 or higher is set on the instrument with the address selection switches.
Main menu
Instrument address
Hardware addressing
Software addressing
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You can enter an unambiguous designation for the sensor, e.g. the measurement loop name or the tank or product designation. In digital systems and in the documentation of larger plants, a singular desig-nation must be entered for exact identification of individual measuring points.
The available digits include:
•
Letters from A … Z•
Numbers from 0 … 9•
Special characters +, , /,-In this menu item you activate/deactivate the Secondary sensor for electronic differential pressure and select the application.
VEGABAR 83 can be used for process pressure and level measure-ment. Default setting is process pressure measuremeasure-ment. The mode can be changed in this adjustment menu.
If you have connected no Secondary sensor, you confirm this with "
Deactivate".
Depending on the selected application, different subchapters in the following adjustment steps are important. There you can find the individual adjustment steps.
Enter the requested parameters via the appropriate keys, save your settings with [OK] and jump to the next menu item with the [ESC] and the [->] key.
In this menu item, the adjustment units of the instrument are deter-mined. The selection determines the unit displayed in the menu items
" Min. adjustment (Zero)" and " Max. adjustment (Span)".
Unit of measurement:
If the level should be adjusted in a height unit, the density of the me-dium must also be entered later during the adjustment.
In addition, the temperature unit of the instrument is specified. The selection determines the unit displayed in menu items " Peak value, temperature" and "in the variables of the digital output signal".
Application
Units
45037-EN-210726 Temperature unit:
Enter the requested parameters via the appropriate keys, save your settings with [OK] and jump to the next menu item with the [ESC] and the [->] key.
Especially with chemical seal systems, the installation position of the instrument can shift (offset) the measured value. Position correction compensates this offset. In the process, the actual measured value is taken over automatically. With relative pressure measuring cells a manual offset can also be carried out.
If the actual measured value should be taken over as correction value during automatic position correction, this value must not be influ-enced by product coverage or static pressure.
With the manual position correction, the offset value can be deter-mined by the user. Select for this purpose the function " Edit" and enter the requested value.
Save your settings with [OK] and move with [ESC] and [->] to the next menu item.
After the position correction is carried out, the actual measured value is corrected to 0. The corrective value appears with an inverse sign as offset value in the display.
The position correction can be repeated as often as necessary. How-ever, if the sum of the corrective values exceeds 20 % of the nominal measuring range, then no position correction is possible.
VEGABAR 83 always measures pressure independently of the pro-cess variable selected in the menu item " Application". To output the selected process variable correctly, an allocation of the output signal to 0 % and 100 % must be carried out (adjustment).
With the application " Level", the hydrostatic pressure, e.g. with full and empty vessel, is entered for adjustment. See following example:
Position correction
Adjustment
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2
1
100%
0%
5 m (196.9")
Fig. 32: Parameter adjustment example Min./max. adjustment, level measure-ment
1 Min. level = 0 % corresponds to 0.0 mbar 2 Max. level = 100 % corresponds to 490.5 mbar
If these values are not known, an adjustment with filling levels of e.g.
10 % and 90 % is also possible. By means of these settings, the real filling height is then calculated.
The actual product level during this adjustment is not important, because the min./max. adjustment is always carried out without changing the product level. These settings can be made ahead of time without the instrument having to be installed.
Note:
If the adjustment ranges are exceeded, the entered value will not be accepted. Editing can be interrupted with [ESC] or corrected to a value within the adjustment ranges.
For the other process variables such as e.g. process pressure, differ-ential pressure or flow, the adjustment is performed in like manner.
Proceed as follows:
1. Select the menu item " Setup" with [->] and confirm with [OK].
Now select with [->] the menu item " Zero adjustment" and con-firm with [OK].
2. Edit the mbar value with [OK] and set the cursor to the requested position with [->].
3. Set the requested mbar value with [+] and store with [OK].
Zero adjustment
45037-EN-210726 4. Go with [ESC] and [->] to the span adjustment
The zero adjustment is finished.
Information:
The Zero adjustment shifts the value of the span adjustment. The span, i.e. the difference between these values, however, remains unchanged.
For an adjustment with pressure, simply enter the actual measured value indicated at the bottom of the display.
If the adjustment ranges are exceeded, the message " Outside parameter limits" appears. The editing procedure can be aborted with [ESC] or the displayed limit value can be accepted with [OK].
Proceed as follows:
1. Select with [->] the menu item Span adjustment and confirm with [OK].
2. Edit the mbar value with [OK] and set the cursor to the requested position with [->].
3. Set the requested mbar value with [+] and store with [OK].
For an adjustment with pressure, simply enter the actual measured value indicated at the bottom of the display.
If the adjustment ranges are exceeded, the message " Outside parameter limits" appears. The editing procedure can be aborted with [ESC] or the displayed limit value can be accepted with [OK].
The span adjustment is finished.
Proceed as follows:
1. Select the menu item " Setup" with [->] and confirm with [OK].
Now select with [->] the menu item " Adjustment", then " Min.
adjustment" and confirm with [OK].
2. Edit the percentage value with [OK] and set the cursor to the requested position with [->].
3. Set the requested percentage value (e.g. 10 %) with [+] and save Span adjustment
Min. adjustment - Level
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5. Save settings with [OK] and move with [ESC] and [->] to the max.
adjustment.
The min. adjustment is finished.
For an adjustment with filling, simply enter the actual measured value indicated at the bottom of the display.
Proceed as follows:
1. Select with [->] the menu item Max. adjustment and confirm with [OK].
2. Edit the percentage value with [OK] and set the cursor to the requested position with [->].
3. Set the requested percentage value (e.g. 90 %) with [+] and save with [OK]. The cursor jumps now to the pressure value.
4. Enter the pressure value for the full vessel (e.g. 900 mbar) cor-responding to the percentage value.
5. Save settings with [OK]
The max. adjustment is finished.
For an adjustment with filling, simply enter the actual measured value indicated at the bottom of the display.
A linearization is necessary for all vessels in which the vessel volume does not increase linearly with the level - e.g. a horizontal cylindri-cal or sphericylindri-cal tank - and the indication or output of the volume is required. Corresponding linearization curves are preprogrammed for these vessels. They represent the correlation between the level per-centage and vessel volume. The linearization applies to the measured value indication and the current output.
Caution:
Note the following, if the respective sensor is used as part of an over-fill protection system according to WHG:
If a linearisation curve is selected, the measuring signal is no longer necessarily linear to the filling height. This must be considered by the user especially when setting the switching point on the limit signal transmitter.
Since the parameter adjustment of the Function Block 1 (FB1) is very comprehensive, it was divided into various submenu items.
Max. adjustment - Level
Linearisation
AI FB1
45037-EN-210726 In menu item " Channel" you determine the input signal for further processing in AI FB 1.
As input signals, the output values of Transducer Block (TB) can be selected.
In the menu item " Scaling unit" you define the scaling variable and scaling unit of the output value of FB 1.
In the menu item " Scaling", you assign the min. and max. values of the input signal (Channel) to the respective values of the output (Out Scale). The units correspond to the previous selection.
Min. values for PV lin Proc. and Out Scale process pressure in bar:
Max. values for PV lin Proc. and Out Scale process pressure in bar:
To damp process-dependent measured value fluctuations, you can set a time of 0 … 999 s in this menu item.
The damping applies to the level and interface measurement.
AI FB1 - Channel
AI FB1 - scaling unit
AI FB1 - scaling
AI FB1 - damping
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In the menu item " Lock/unlock adjustment" you safeguard the sensor parameters against unauthorized or unintentional modifications.
This is done by entering a four-digit PIN.
With active PIN, only the following adjustment functions are possible without entering a PIN:
•
Select menu items and show data•
Read data from the sensor into the display and adjustment module Releasing the sensor adjustment is also possible in any menu item by entering the PIN.Caution:
With active PIN, adjustment via PACTware/DTM and other systems is also blocked.
6.5.2 Display
This menu item enables the setting of the requested national lan-guage.
The following languages are available:
•
German•
English•
French•
Spanish•
Russian•
Italian•
Dutch•
Portuguese•
Japanese•
Chinese•
Polish•
Czech•
TurkishIn delivery status, the VEGABAR 83 is set to English.
In this menu item, you define which measured value is displayed.
The default setting for the display value is " Lin. percent".
Lock/Unlock adjustment
Language
Display value 1 and 2
45037-EN-210726 In this menu item you define the number of decimal positions with which the measured value is displayed.
The default setting for the display format is " Automatic".
The display and adjustment module has a backlight for the display.
In this menu item you can switch on the lighting. You can find the required operating voltage in chapter " Technical data".
In delivery status, the lighting is switched on.
6.5.3 Diagnostics
In this menu item, the device status is displayed.
In case of error, e.g. the error code F017, e.g. the error description "
Adjustment span too small" and a four digit figure are displayed for service purposes. You can find the error codes with description, rea-son as well as rectification in chapter " Asset Management".
The respective min. and max. measured values are saved in the sensor. The two values are displayed in menu item " Peak values, pressure".
In another window you can carry out a reset of the peak values separately.
The respective min. and max. measured values of the measuring cell and the electronics temperature are stored in the sensor. In menu item " Peak value, temperature", both values are displayed.
In another window you can carry out a reset of the two peak values separately.
Display format 1 and 2
Backlight
Device status
Peak value, pressure
Peak value, temperature
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In this menu item you simulate measured values. Hence, the signal path can be tested via the bus system to the input card of the control system.
Select the requested simulation variable and set the requested value.
To deactivate the simulation, you have to push the [ESC] key and confirm the message " Deactivate simulation" with the [OK] key.
Caution:
During simulation, the simulated value is output as digital signal.
The status message along with the Asset Management function is "
Maintenance".
Information:
The sensor terminates the simulation automatically after 60 minutes.
6.5.4 Additional adjustments
In this menu item, you adjust the internal clock of the sensor. There is no adjustment for summer/winter (daylight saving) time.
After a reset, certain parameter adjustments made by the user are reset.
The following reset functions are available:
Delivery status: Restores the parameter settings at the time of shipment from the factory, incl. the order-specific settings. Any user-defined linearisation curve as well as the measured value memory are deleted.
Basic settings: Resets the parameter settings, incl. special param-eters, to the default values of the respective instrument. Any pro-grammed linearisation curve as well as the measured value memory are deleted.
Simulation
Date/Time
Reset
45037-EN-210726 Note:
You can find the default values of the device in chapter " Menu over-view".
The instrument settings are copied with this function. The following functions are available:
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Read from sensor: Read data from sensor and store into the display and adjustment module•
Write into sensor: Store data from the display and adjustment module back into the sensorThe following data or settings for adjustment of the display and ad-justment module are saved:
•
All data of the menu " Setup" and " Display"•
In the menu " Additional adjustments" the items " Reset, Date/Time"
•
The user-programmable linearization curveThe copied data are permanently saved in an EEPROM memory in the display and adjustment module and remain there even in case of power failure. From there, they can be written into one or more sen-sors or kept as backup for a possible electronics exchange.
Note:
Before the data are saved in the sensor, a safety check is carried out to determine if the data match the sensor. In the process the sensor type of the source data as well as the target sensor are displayed. If the data do not match, a fault message is outputted or the function is blocked. The data are saved only after release.
In this menu item you gain access to the protected area where you can enter special parameters. In exceptional cases, individual parameters can be modified in order to adapt the sensor to special requirements.
Change the settings of the special parameters only after having con-tacted our service staff.
6.5.5 Info
In this menu item, you can read out the instrument name and the instrument serial number:
Copy instrument settings
Special parameters
Device name
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In this menu item, the hardware and software version of the sensor is displayed.
In this menu item, the date of factory calibration of the sensor as well as the date of the last change of sensor parameters are displayed via the display and adjustment module or via the PC.
In this menu item, the Profibus ident number of the sensor is dis-played.
In this menu item, the features of the sensor such as approval, pro-cess fitting, seal, measuring range, electronics, housing and others are displayed.